App Locker II is a free tool, if you want to remove Ad and the protection number limit, please donate it.
There are two ways to donate it:
1) Android Market
Please find the donation version in Menu > More Apps.
2) PayPal
Please click the 'Donate' button below to donate it.
If you prefer to do it in PC browser, you also can donate it through
http://smart-dog.appspot.com/donate_protector.html.
NOTE
1) If you donate it through the 'Donate' button below, above prod code will be copied to clipboard,
please paste it into additional message box during the transaction.
Of course, don't worry if you forget it, we also would contact you soon.
2) We will send key to you within 24 hours (usually 1 - 8 hours). If you don't receive it after 24 hours, please check your spam mail setting and contact me.